Start off by manually overclocking in the bios. Turn off turbo boost and enable manual mode. Turn LLC all the way down, so we don't get voltage flying everywhere. Turn off all the power saving features and set digi vrm to the highest should be 130 and 140%. Now start off at 4.5 with 1.37500 volts. Use
Prime95(it's free) to test for stability. When you do this test, make sure your temps never reach above 61 celsius, by using the program coretemp. Now test it for up to an hour or two and if you get a sumout error, you need to increase to voltage to get it stable at that clock(anytime sumout error occurs voltage is lacking)You may also have in to increase the nb voltage by 5%. Just up your voltage by 0.006250, with a little bump in mhz every time. Just make sure to bump your voltage a little at a time. If you have a good enough loop you should hit 4.8. I am not to familiar with the clocks of a 4100 series, but should be close to the 8100 series, but from what i have seen the 4-6 series need slightly more volts to run at the some clock speeds. The max safe voltage I would take is about 1.5 unless you want the chip to die, they supposedly can handle up to 1.55 but for 24/7 i have yet to see this. This is just a quick start there is plenty of info in the amd threads if you look and search.
p.s. also use a mixture of multiplier and bus speed to increase the clock speeds. multi will just overclock the cpu while the fsb(front side bus) overclocks other parts along with the cpu such as memory speeds. 229(busx21(multi) i get 4.84 ghz.
Edited by pwnzilla61 - 3/21/12 at 3:06pm